[MangaD]

Hi @White Fang, welcome to the HFE forums.

Let's get a few things clear first:

1. Circular referral between 2 players is not possible. This means that you cannot add the code of the person who added your code. Therefore, if you entered @Relvamon's code, he cannot return you the favour. (However, circular referral between 3 players is possible: A->B->C->A)
   
2. Most people here already added someone's referral code, so asking someone in particular to add your code has high probability of failing.
   
3. Whoever enters your code will get a 3-star hero, no matter which Act you are on.
   

That is it. New version of HFX will be released by the end of this month, you can read more about it here.

Good luck and have fun. ;)